Fever is one of the most common reasons parents bring a child to the doctor, and it is also one of the most anxiety-inducing. The important thing to understand is that fever itself is not a disease: it is the body's immune response to infection. Most fevers in children are caused by viral infections that resolve on their own. However, some fevers are signals of something more serious that needs prompt attention.
What temperature counts as a fever in a child?
A temperature of 38 degrees Celsius (100.4 degrees Fahrenheit) or above is considered a fever. The method of measurement matters: rectal temperature is most accurate in infants under 3 months, while axillary (armpit) measurement is common but reads about 0.5 to 1 degree lower than true core temperature. Ear or forehead thermometers are convenient but less reliable in very young children.
When should you go to the emergency room immediately?
- Any fever in a baby younger than 3 months: see a doctor the same day, even if the baby appears well
- Fever above 40 degrees Celsius in any child
- Fever with a febrile seizure (body stiffening or jerking): call 108 immediately
- Fever with a stiff neck, severe headache, sensitivity to light, or a rash that does not fade when pressed with a glass
- Fever with difficulty breathing, blue lips or fingertips, or laboured breathing
- A child who cannot be woken up or is unusually limp, drowsy, or unresponsive
- Fever with persistent vomiting preventing any fluids from being kept down
- Fever lasting more than 5 days without improvement
- A child who has a known immune deficiency or is on chemotherapy
When can fever be managed at home?
A child older than 3 months with a fever below 39 degrees Celsius who is alert, drinking fluids, responding normally, and not showing any of the warning signs above can generally be managed at home with rest, adequate fluids, and fever-reducing medication as advised by your paediatrician. The child's behaviour matters as much as the number on the thermometer. A child who is playing, making eye contact, and interested in surroundings is reassuring even with a moderately high fever.
Does a higher temperature always mean a more serious illness?
Not necessarily. Viral infections commonly cause temperatures of 39 to 40 degrees Celsius that resolve without any specific treatment. Conversely, serious bacterial infections such as meningitis may initially present with lower temperatures, particularly in very young infants. This is why the pattern of symptoms and the child's overall appearance matter more than the temperature reading alone.
What about febrile seizures?
Febrile seizures occur in about 2 to 5 percent of children between the ages of 6 months and 5 years, typically when temperature rises rapidly. They are frightening to witness but most simple febrile seizures last under 5 minutes and do not cause long-term harm. If your child has a seizure, lay them on their side, do not put anything in their mouth, and call 108 immediately. Once the seizure stops, take the child to a doctor even if they appear to have recovered fully.
A word from our clinic
I am Dr. Farzana Shaikh, paediatrician at Prudent International Health Clinic in Viman Nagar, Pune. If you are ever unsure whether your child's fever needs attention, please call us rather than waiting and worrying. We are available all 7 days, 9 AM to 9 PM, and we always see sick children promptly. Call or WhatsApp +91 70287 22200. For current charges, please call the clinic. For emergencies involving difficulty breathing, seizure, or altered consciousness, call 108 or go to the nearest emergency department immediately.
